Is THCA Legal in Wyoming?

Last reviewed: May 22, 2026

No, in practical terms. Wyoming's 2024 hemp rewrite (SF 32 / Senate Enrolled Act 24, effective July 1, 2024) replaced the federal delta-9-only test with a total-THC standard. THCA flower at typical retail potencies of 15 to 30 percent converts to far more than 0.3 percent THC on a weight basis once you add the THCA value to the delta-9 value, which fails Wyoming's hemp definition and falls under the Schedule I marijuana provisions of W.S. 35-7-1031. The 10th Circuit Court of Appeals upheld the Wyoming statute on October 27, 2025 in Green Room v. Wyoming, ruling that the 2018 federal Farm Bill does not preempt the state's stricter rules.

Wyoming Cannabis & Hemp Overview

Wyoming has no adult-use cannabis program and no comprehensive medical cannabis program. The Wyoming Hemp Extract Act (W.S. 35-7-1901 et seq., 2015 HB 32) created a narrow medical pathway for low-THC hemp extract (under 0.3 percent THC, at least 5 percent CBD) for patients with intractable epilepsy who have a neurologist's written certification. There is no dispensary network and no patient registry; physicians may certify and pharmacies may dispense the extract directly.

Wyoming has historically been one of the most prohibitionist cannabis states. Recreational possession of three ounces or less remains a misdemeanor under W.S. 35-7-1031(c). After SF 32 closed the hemp loophole, the only adult-use cannabinoid retail products that remain legal are non-intoxicating CBD products and very narrowly compliant hemp items. The Wyoming Department of Agriculture (WDA) administers cultivation under a USDA-approved State Hemp Production Plan.

What Wyoming Law Actually Says

W.S. 11-51-101(a), as amended by 2024 SF 32, defines "hemp" as Cannabis sativa L. or any product made from the plant "with no synthetic substances and with a THC concentration of not more than three-tenths of one percent (0.3%) on a dry weight basis." The same section defines "THC" to capture delta-9, delta-8, delta-10, HHC, THC-O, THCP, and other psychoactive isomers and analogs. Critically, Wyoming uses a total-THC concentration test, not a delta-9-only test.

THCA flower at 20 percent THCA converts to approximately 17.5 percent delta-9 THC after decarboxylation (THCA times the 0.877 molar conversion factor). Combined with any existing delta-9 content, total-THC math puts that flower far above the 0.3 percent Wyoming ceiling. The 10th Circuit confirmed this reading in Green Room v. Wyoming, No. 24-8053 (Oct. 27, 2025), and rejected arguments that the 2018 federal Farm Bill preempts the state-level total-THC math.

Hemp products that fail the Wyoming hemp definition are not "hemp" and are treated as marijuana under W.S. 35-7-1031. First-offense possession of three ounces or less is a misdemeanor with up to 12 months in jail and a $1,000 fine. Possession of more than three ounces is a felony with up to five years and a $10,000 fine. Sale or delivery is a felony regardless of weight.

How Enforcement Has Played Out

After SF 32 took effect on July 1, 2024, Wyoming Highway Patrol and several county sheriffs ran compliance sweeps on hemp retailers in 2024 and 2025, seizing flower and concentrates that did not pass total-THC testing. The 10th Circuit ruling in October 2025 ended the federal-preemption defense that retailers had been raising. Federal H.R. 5371 §781, signed November 12, 2025 and effective November 12, 2026, brings the federal hemp definition closer to Wyoming's by adopting a total-THC test and a 0.4 mg per container cap.

What This Means for Retailers Selling THCA in Wyoming

• Stop selling THCA flower, vapes, or concentrates in Wyoming. Inventory must pass the total-THC test under W.S. 11-51-101(a) or it is contraband.
• Confirm every COA on file uses post-decarboxylation total-THC math, not delta-9 only. A delta-9-only COA is not sufficient evidence of compliance in Wyoming.
• Pull non-compliant SKUs from shelves and document destruction. Wyoming has prosecuted retailers who kept selling after the 2024 effective date.
• If you operate online with shipping to Wyoming, block Wyoming ZIP codes for THCA flower, gummies, vapes, and other high-THCA products.
• Plan compliance burndown for the federal H.R. 5371 §781 effective date of November 12, 2026, even though Wyoming's state-level rules are already stricter.

What This Means for Consumers Buying THCA in Wyoming

You cannot buy compliant THCA flower in Wyoming. Most out-of-state online retailers that ship federally legal hemp now block Wyoming addresses for THCA-heavy SKUs after the 10th Circuit ruling. Possession of non-compliant THCA flower exposes you to W.S. 35-7-1031 marijuana penalties. THCA decarboxylates to delta-9 THC on standard urine, saliva, and hair drug tests, so any THCA product produces a positive result.

Pending Legislation to Watch

2025 HB 267 proposed a narrow beverage carveout for hemp-derived intoxicating cannabinoids at 10 mg per container; it did not pass. 2025 HB 198 was also reported but did not progress. The 2026 Wyoming Legislature met in budget session and did not loosen the SF 32 framework. Industry coalitions including Wyoming hemp retailers and farm groups have indicated they will push another beverage carveout in the 2027 general session.

Federal H.R. 5371 §781, signed November 12, 2025 and effective November 12, 2026, brings the federal hemp definition into line with Wyoming on two key points: total-THC testing and the exclusion of synthetic and chemically converted cannabinoids. After November 12, 2026, most THCA-heavy products will fail federal hemp status nationwide, which removes the supply chain that some Wyoming-bound online retailers still relied on.

Frequently Asked Questions

Is THCA flower legal in Wyoming in 2026? No in practical terms. Wyoming's total-THC test under W.S. 11-51-101(a) fails almost all THCA flower at typical retail potency.

What changed with 2024 SF 32? SF 32 (Senate Enrolled Act 24, effective July 1, 2024) redefined "hemp" to exclude synthetic substances and applied a total-THC standard. It also expanded "THC" to cover isomers including delta-8, delta-10, HHC, and THCP.

Did the 10th Circuit really uphold the Wyoming hemp law? Yes. Green Room v. Wyoming, No. 24-8053 (10th Cir. Oct. 27, 2025) held that the 2018 federal Farm Bill does not preempt Wyoming's stricter state hemp definition.

Can I order THCA online to a Wyoming address? Most compliant retailers block Wyoming for THCA-heavy SKUs. Receiving or possessing non-compliant product triggers W.S. 35-7-1031 marijuana penalties.

Does THCA show up on a drug test? Yes. THCA converts to delta-9 THC when heated and produces standard THC metabolites on urine, saliva, and hair tests.

How will federal H.R. 5371 §781 affect Wyoming THCA? The federal hemp definition shifts to total-THC and a 0.4 mg per container cap on November 12, 2026. Wyoming is already stricter; the federal change closes the interstate supply gap for THCA-heavy products.

This page is provided for informational purposes by ComplyAssistAI LLC and is not legal advice. Hemp and cannabis law in Wyoming changes frequently. For business compliance questions, consult a Wyoming-licensed cannabis attorney. Find one in our Cannabis Lawyer Directory.